基于光反馈半导体激光器的多开关状态检测系统

发布时间：2018-01-10 00:23

本文关键词：基于光反馈半导体激光器的多开关状态检测系统　出处：《光子学报》2017年03期 　论文类型：期刊论文

【摘要】：为了能够同时检测多个开关的状态,提出了一种基于光反馈半导体激光器的多开关状态检测系统.该系统由半导体激光器、多开关传感网络和数据采集与处理单元组成.多开关传感网络包括多个反馈光路,每个光路由耦合器、光纤和强度反射式光开关构成.所有开关都闭合时,系统没有反馈,激光器输出连续光.当有开关被打开时,光反馈使系统工作在混沌状态.根据系统输出信号的自相关曲线中与各开关位置对应处的峰值是否大于预设阈值来判断开关的状态,通过编程令其它位置处的峰值为零来消除干扰峰.搭建了3个开关的实验系统,分别对不同开关状态下的系统进行检测,结果表明该系统可以准确检测单个或多个开关的状态.
[Abstract]:In order to be able to simultaneously detect multiple switch state, a switch state of semiconductor lasers with optical feedback based detection system. The system consists of semiconductor laser, multi switch sensor network and data acquisition and processing unit. Multi sensor network switch comprises a plurality of feedback light path, each optical coupler and fiber routing, strength a reflection type optical switch. All the switches are closed, there is no feedback system, the output of continuous light. When the switch is opened, the optical feedback to make the system work in the state of chaos. According to the peak autocorrelation curve of system output signal and the corresponding position of the switch is larger than a preset threshold to judge the state of the switch. The peak position of the other program to eliminate the interference peak to zero. The experimental system was built with 3 switches, respectively to detect different switching states, the results of table It is clear that the system can accurately detect the state of a single or multiple switches.

【作者单位】：上海大学通信与信息工程学院特种光纤与光接入网重点实验室;
【基金】：上海市浦江人才计划(No.14PJD017) 国家自然科学基金(Nos.61108004,61377082) 上海市特种光纤与光接入网重点实验室开放课题(No.SKLSFO2015-02)资助~~
【分类号】：TN248.4
【正文快照】： 0引言通过检测开关的状态,可以实现对某些系统的监控.电信井盖、银行保险柜、保密资料室的门窗以及存放1-3004130危险品的仓库门窗等都属于开关状态的监控范围.还有一些特定点的温度、液位、气压、液压等达到某一阈值后需予以报警,也可以用开关状态的检测来实现.因此,开关状态

【相似文献】